TM 10-6640-239-13 4-74 4-34.    AIR COMPRESSOR. This task consists of: a. Remove b. Install c. Test INITIAL SET-UP Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 1) Materials/Parts Required Lockwashers (8) Personnel Required Two (2) General Safety Instructions WARNING ELECTRICAL SHOCK Before  performing  any  maintenance  actions  on  electrical  equipment,  ensure  all electrical power has been turned off.  Failure to comply with this warning may result in serious injury or death. REMOVE NOTE Before removing air compressor purge by opening any system valve. Remove Air Compressor.  See Figure 4-22. a. Set switch on compressor controller (1) to OFF. b. Open circuit breaker A15CB6 on Power Panel No. 2. c. Remove four screws (2), nylon washers (3), and cover (4) from adjustment junction box (5).  Tag and disconnect motor leads. d. Disconnect conduit from adjustment junction box (5). e. Disconnect discharge hose (6) from tee fitting (7) at compressor discharge. f. Disconnect drain tubing (8) at tee fitting (7) at compressor discharge. g. Remove four screws (9), lockwashers (10), and washers (11) that secure compressor foundation (12) to floor of mechanical room.  Discard lockwashers. h. Remove four screws (13), lockwashers (14), washers (15) and remove compressor (16) from compressor foundation (12).  Discard lockwashers.